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caffeine: Meaning and Definition of
caf•feine
Pronunciation: (ka-fēn', kaf'ēn, kaf'ē-in), [key]
— n. Chem., Pharm.
- a white, crystalline, bitter alkaloid, CHNO, usually derived from coffee or tea: used in medicine chiefly as a nervous system stimulant.
See also:
- caffeine (Thesaurus)
